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CarbyneIn chemistry, a carbyne is a monovalent carbon radical species. It occurs in several ways. Additional recommended knowledge
Gas phaseA carbene can occur as a short-lived reactive intermediate. For instance, fluoromethylidyne (CF) can be detected in the gas phase by spectroscopy as an intermediate in the flash photolysis of CHFBr2. [1] OrganometallicCarbynes are incorporated in metal carbyne complexes[2] [3] For example in [WBr(CO)2(2,2'-bipyridine)C-Aryl] and [WBr(CO)2(PPh3)2C-NR2]. An example of how to make such a compound would be to react [W(CO)6] with Lithium diisopropylamide to form [(iPr2N)(OLi)C=W(CO)5]. This is then reacted with either oxalyl bromide or Br-Br-PPh3 followed by triphenyl phosphine. Another method is to treat a methoxy metal carbene with a lewis acid. [4] Form of carbonCarbyne, or polyyne, is also another name for Linear Acetylenic Carbon [5] (LAC) the carbon allotrope that has the chemical structure [6] -(C:::C)n- .Carbon in this modification is linear with sp orbital hybridisation, and is a polymer with alternating single and triple bonds. This type of carbyne is of considerable interest to nanotechnology as its Young's modulus is forty times that of the hardest known material - diamond [7]. References
Categories: Reactive intermediates | Organometallic chemistry | Nanotechnology |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Carbyne". A list of authors is available in Wikipedia. |